MACHINE SHOP CALCULATION - OD1640 - LESSON 2/TASK 3
FIND THE DIMENSION OF "x."
Inspect the problem to determine which sides or angles are known.
According to figure 26, view A, there are two 32,, 30' angles.
The diameter of the circle (plug) is 1 inch.
Generally, the first distance which must be found is that from
the center of the plug to the vertex of the angle.
To do this, it is necessary to find a
right triangle which
includes this distance.
First, find the
point of tangency on
both sides of the slot by constructing a
radius line at right
angles to the side of the slot, as shown in
figure 26, view B.
Then construct ABCD as shown in figure 26, view C.
line of the slot bisects angle D, and divides the figure into two
equal right triangles ABD